680153826 has 96 divisors (see below), whose sum is σ = 1578737664. Its totient is φ = 194911200.

The previous prime is 680153813. The next prime is 680153863. The reversal of 680153826 is 628351086.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1057461 + ... + 1058103.

It is an arithmetic number, because the mean of its divisors is an integer number (16445184).

Almost surely, 2^680153826 is an apocalyptic number.

680153826 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 680153826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789368832).

680153826 is an abundant number, since it is smaller than the sum of its proper divisors (898583838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680153826 is a wasteful number, since it uses less digits than its factorization.

680153826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 680153826 is about 26079.7589329349. The cubic root of 680153826 is about 879.4322379344.

The spelling of 680153826 in words is "six hundred eighty million, one hundred fifty-three thousand, eight hundred twenty-six".